cekaylaralsantiR cekaylaralsantiR

18-03-2017
Mathematics

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Math help
Write the equation of the that passes through (1,5) and (-2,14) in slope-intercept form

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ghanami ghanami

18-03-2017

Hello : let A(1;5) and B(-2;14)
the equation is y = ax+b .... a is a slope
a = (yb -ya)/(xb -xa)
a = (14-5)/(-2-1)
a = -3
y = -3x+b
A passes through the line : 5 =-3(1)+b ..... b = 8
y = -3x+8

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